| 摘要 |
PURPOSE: A complex window system with an inner panel and an outer panel combined by fitting is provided to prevent fire by foaming PVC including incombustible materials on the inner panel, and to increase the productivity by reducing assembling hours. CONSTITUTION: A complex window system is composed of a window frame formed by combining outer aluminum panels(11,21) with inner insulating panels(12,22). Protruded parts(111,211) are protruded in the same planes of the outer panels, and groove parts(121,221) are recessed in the inner insulating panels by extrusion-molding. The protruded parts of the outer panels are fitted to the groove parts of the inner insulating panels, and composed of main protruded parts and left and right symmetrical branch protrusion parts. The inner panel is combined with the outer panel by fitting the protruded part to the groove part.
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